Shawn Arnell isn't sure what he did to piss off CBS Sportsline columnist Gregg Doyle so badly. On Tuesday we
detailed their radio interview »10/29/08 11:00am 10/29/08 11:00am in which Arnell, co-host of in Little Rock (that's him to the right), jousted with the feisty online columnist about a piece he wrote on Thursday on Arkansas football. "He kind…